#pragma once
#include "mysql.h"
#include "chat_session_member.hxx"
#include "chat_session_member-odb.hxx"

class ChatSessionMemeberTable
{
public:
    using ptr = std::shared_ptr<ChatSessionMemeberTable>;
    ChatSessionMemeberTable(const std::shared_ptr<odb::core::database> &db) : _db(db) {}
    // 单个会话成员的新增 --- ssid & uid
    bool append(ChatSessionMember &csm)
    {
        try
        {
            odb::transaction trans(_db->begin());
            _db->persist(csm);
            trans.commit();
        }
        catch (std::exception &e)
        {
            LOG_ERROR("新增单会话成员失败 {}-{}:{}！",
                      csm.session_id(), csm.user_id(), e.what());
            return false;
        }
        return true;
    }
    bool append(std::vector<ChatSessionMember> &csm_lists)
    {
        try
        {
            odb::transaction trans(_db->begin());
            for (auto &csm : csm_lists)
            {
                _db->persist(csm);
            }
            trans.commit();
        }
        catch (std::exception &e)
        {
            LOG_ERROR("新增多会话成员失败 {}-{}:{}！",
                      csm_lists[0].session_id(), csm_lists.size(), e.what());
            return false;
        }
        return true;
    }
    // 删除指定会话中的指定成员 -- ssid & uid
    bool remove(ChatSessionMember &csm)
    {
        try
        {
            odb::transaction trans(_db->begin());
            typedef odb::query<ChatSessionMember> query;
            typedef odb::result<ChatSessionMember> result;
            _db->erase_query<ChatSessionMember>(query::session_id == csm.session_id() &&
                                                query::user_id == csm.user_id());
            trans.commit();
        }
        catch (std::exception &e)
        {
            LOG_ERROR("删除单会话成员失败 {}-{}:{}！",
                      csm.session_id(), csm.user_id(), e.what());
            return false;
        }
        return true;
    }
    // 删除会话的所有成员信息
    bool remove(const std::string &ssid)
    {
        try
        {
            odb::transaction trans(_db->begin());
            typedef odb::query<ChatSessionMember> query;
            typedef odb::result<ChatSessionMember> result;
            _db->erase_query<ChatSessionMember>(query::session_id == ssid);
            trans.commit();
        }
        catch (std::exception &e)
        {
            LOG_ERROR("删除会话所有成员失败 {}:{}！", ssid, e.what());
            return false;
        }
        return true;
    }
    std::vector<std::string> members(const std::string &ssid)
    {
        std::vector<std::string> res;
        try
        {
            odb::transaction trans(_db->begin());
            typedef odb::query<ChatSessionMember> query;
            typedef odb::result<ChatSessionMember> result;
            result r(_db->query<ChatSessionMember>(query::session_id == ssid));
            for (result::iterator i(r.begin()); i != r.end(); ++i)
            {
                res.push_back(i->user_id());
            }
            trans.commit();
        }
        catch (std::exception &e)
        {
            LOG_ERROR("获取会话成员失败:{}-{}！", ssid, e.what());
        }
        return res;
    }

private:
    std::shared_ptr<odb::core::database> _db;
};
